步行街

• 止(foot (pictographic))RADICAL
• 止(second foot below)ASSOCIATIVE

A step is two feet, one above the other, following each other moving forward.

• 彳(left foot step)RADICAL
• 亍(right foot; right step)ASSOCIATIVE

Left foot then right foot stepping forward is the very action of traveling down a road.

• 行(path; step)RADICAL
• 圭(jade; precious stone)PHONETIC

A street is the road where people walk, with sound borrowed from the pointed tool.